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bnxt_en: alloc tc_info{} struct only when tc flower is enabled

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TC flower is not enabled on VFs and when there's no FW support.
Alloc the tc_info{} struct at init time only when TC flower is being
enabled.

Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sathya Perla 2017-10-26 11:51:32 -04:00 committed by David S. Miller
parent 5a84acbebb
commit cd66358e52
5 changed files with 34 additions and 22 deletions
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2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -7347,7 +7347,7 @@ static int bnxt_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
{
struct bnxt *bp = cb_priv;
if (BNXT_VF(bp))
if (!bnxt_tc_flower_enabled(bp))
return -EOPNOTSUPP;
switch (type) {

2
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1346,7 +1346,7 @@ struct bnxt {
enum devlink_eswitch_mode eswitch_mode;
struct bnxt_vf_rep **vf_reps; /* array of vf-rep ptrs */
u16 *cfa_code_map; /* cfa_code -> vf_idx map */
struct bnxt_tc_info tc_info;
struct bnxt_tc_info *tc_info;
};
#define BNXT_RX_STATS_OFFSET(counter) \

47
drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
View File

@ -658,7 +658,7 @@ static int bnxt_tc_put_l2_node(struct bnxt *bp,
struct bnxt_tc_flow_node *flow_node)
{
struct bnxt_tc_l2_node *l2_node = flow_node->l2_node;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
int rc;
/* remove flow_node from the L2 shared flow list */
@ -714,7 +714,7 @@ bnxt_tc_get_ref_flow_handle(struct bnxt *bp, struct bnxt_tc_flow *flow,
struct bnxt_tc_flow_node *flow_node,
__le16 *ref_flow_handle)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct bnxt_tc_flow_node *ref_flow_node;
struct bnxt_tc_l2_node *l2_node;
@ -829,7 +829,7 @@ static int bnxt_tc_get_ref_decap_handle(struct bnxt *bp,
struct bnxt_tc_flow_node *flow_node,
__le32 *ref_decap_handle)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct bnxt_tc_flow_node *ref_flow_node;
struct bnxt_tc_l2_node *decap_l2_node;
@ -867,7 +867,7 @@ static void bnxt_tc_put_decap_l2_node(struct bnxt *bp,
struct bnxt_tc_flow_node *flow_node)
{
struct bnxt_tc_l2_node *decap_l2_node = flow_node->decap_l2_node;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
int rc;
/* remove flow_node from the decap L2 sharing flow list */
@ -886,7 +886,7 @@ static void bnxt_tc_put_decap_handle(struct bnxt *bp,
struct bnxt_tc_flow_node *flow_node)
{
__le32 decap_handle = flow_node->decap_node->tunnel_handle;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
int rc;
if (flow_node->decap_l2_node)
@ -973,7 +973,7 @@ static int bnxt_tc_get_decap_handle(struct bnxt *bp, struct bnxt_tc_flow *flow,
__le32 *decap_filter_handle)
{
struct ip_tunnel_key *decap_key = &flow->tun_key;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct bnxt_tc_l2_key l2_info = { {0} };
struct bnxt_tc_tunnel_node *decap_node;
struct ip_tunnel_key tun_key = { 0 };
@ -1051,7 +1051,7 @@ static void bnxt_tc_put_encap_handle(struct bnxt *bp,
struct bnxt_tc_tunnel_node *encap_node)
{
__le32 encap_handle = encap_node->tunnel_handle;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
int rc;
rc = bnxt_tc_put_tunnel_node(bp, &tc_info->encap_table,
@ -1070,7 +1070,7 @@ static int bnxt_tc_get_encap_handle(struct bnxt *bp, struct bnxt_tc_flow *flow,
__le32 *encap_handle)
{
struct ip_tunnel_key *encap_key = &flow->actions.tun_encap_key;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct bnxt_tc_tunnel_node *encap_node;
int rc;
@ -1137,7 +1137,7 @@ static int bnxt_tc_get_tunnel_handle(struct bnxt *bp,
static int __bnxt_tc_del_flow(struct bnxt *bp,
struct bnxt_tc_flow_node *flow_node)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
int rc;
/* send HWRM cmd to free the flow-id */
@ -1180,7 +1180,7 @@ static int bnxt_tc_add_flow(struct bnxt *bp, u16 src_fid,
struct tc_cls_flower_offload *tc_flow_cmd)
{
struct bnxt_tc_flow_node *new_node, *old_node;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct bnxt_tc_flow *flow;
__le32 tunnel_handle = 0;
__le16 ref_flow_handle;
@ -1261,7 +1261,7 @@ done:
static int bnxt_tc_del_flow(struct bnxt *bp,
struct tc_cls_flower_offload *tc_flow_cmd)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct bnxt_tc_flow_node *flow_node;
flow_node = rhashtable_lookup_fast(&tc_info->flow_table,
@ -1280,7 +1280,7 @@ static int bnxt_tc_get_flow_stats(struct bnxt *bp,
struct tc_cls_flower_offload *tc_flow_cmd)
{
struct bnxt_tc_flow_stats stats, *curr_stats, *prev_stats;
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct bnxt_tc_flow_node *flow_node;
struct bnxt_tc_flow *flow;
unsigned long lastused;
@ -1378,7 +1378,7 @@ static int
bnxt_tc_flow_stats_batch_update(struct bnxt *bp, int num_flows,
struct bnxt_tc_stats_batch stats_batch[])
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
int rc, i;
rc = bnxt_hwrm_cfa_flow_stats_get(bp, num_flows, stats_batch);
@ -1405,7 +1405,7 @@ bnxt_tc_flow_stats_batch_prep(struct bnxt *bp,
struct bnxt_tc_stats_batch stats_batch[],
int *num_flows)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
struct rhashtable_iter *iter = &tc_info->iter;
void *flow_node;
int rc, i;
@ -1443,7 +1443,7 @@ done:
void bnxt_tc_flow_stats_work(struct bnxt *bp)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
int num_flows, rc;
num_flows = atomic_read(&tc_info->flow_table.nelems);
@ -1528,7 +1528,7 @@ static const struct rhashtable_params bnxt_tc_tunnel_ht_params = {
int bnxt_init_tc(struct bnxt *bp)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info;
int rc;
if (bp->hwrm_spec_code < 0x10803) {
@ -1536,6 +1536,10 @@ int bnxt_init_tc(struct bnxt *bp)
"Firmware does not support TC flower offload.\n");
return -ENOTSUPP;
}
tc_info = kzalloc(sizeof(*tc_info), GFP_KERNEL);
if (!tc_info)
return -ENOMEM;
mutex_init(&tc_info->lock);
/* Counter widths are programmed by FW */
@ -1545,7 +1549,7 @@ int bnxt_init_tc(struct bnxt *bp)
tc_info->flow_ht_params = bnxt_tc_flow_ht_params;
rc = rhashtable_init(&tc_info->flow_table, &tc_info->flow_ht_params);
if (rc)
return rc;
goto free_tc_info;
tc_info->l2_ht_params = bnxt_tc_l2_ht_params;
rc = rhashtable_init(&tc_info->l2_table, &tc_info->l2_ht_params);
@ -1573,6 +1577,7 @@ int bnxt_init_tc(struct bnxt *bp)
tc_info->enabled = true;
bp->dev->hw_features |= NETIF_F_HW_TC;
bp->dev->features |= NETIF_F_HW_TC;
bp->tc_info = tc_info;
return 0;
destroy_decap_table:
@ -1583,14 +1588,16 @@ destroy_l2_table:
rhashtable_destroy(&tc_info->l2_table);
destroy_flow_table:
rhashtable_destroy(&tc_info->flow_table);
free_tc_info:
kfree(tc_info);
return rc;
}
void bnxt_shutdown_tc(struct bnxt *bp)
{
struct bnxt_tc_info *tc_info = &bp->tc_info;
struct bnxt_tc_info *tc_info = bp->tc_info;
if (!tc_info->enabled)
if (!bnxt_tc_flower_enabled(bp))
return;
rhashtable_destroy(&tc_info->flow_table);
@ -1598,4 +1605,6 @@ void bnxt_shutdown_tc(struct bnxt *bp)
rhashtable_destroy(&tc_info->decap_l2_table);
rhashtable_destroy(&tc_info->decap_table);
rhashtable_destroy(&tc_info->encap_table);
kfree(tc_info);
bp->tc_info = NULL;
}

2
drivers/net/ethernet/broadcom/bnxt/bnxt_tc.h
View File

@ -198,7 +198,7 @@ void bnxt_tc_flow_stats_work(struct bnxt *bp);
static inline bool bnxt_tc_flower_enabled(struct bnxt *bp)
{
return bp->tc_info.enabled;
return bp->tc_info && bp->tc_info->enabled;
}
#else /* CONFIG_BNXT_FLOWER_OFFLOAD */

3
drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
View File

@ -124,6 +124,9 @@ static int bnxt_vf_rep_setup_tc_block_cb(enum tc_setup_type type,
struct bnxt *bp = vf_rep->bp;
int vf_fid = bp->pf.vf[vf_rep->vf_idx].fw_fid;
if (!bnxt_tc_flower_enabled(vf_rep->bp))
return -EOPNOTSUPP;
switch (type) {
case TC_SETUP_CLSFLOWER:
return bnxt_tc_setup_flower(bp, vf_fid, type_data);